Our new website can be found at: https://water.usace.army.mil/office/nae. All USACE water management offices will be moving under the national Access to Water domain in the near future. Please provide any comments to: NAE.RCC@usace.army.mil
Colebrook Dam, West Branch Farmington River

Colebrook Dam, West Branch Farmington River
 Drainage Area: 118 sq. miles 
 Channel Capacity: 3,000 cfs 
 Storage at Spillway Crest: 7.98 in / 50,200 ac-ft  
 Normal Pool: 708 Feet NGVD (Normal), 714.5 Feet (Spring) 
 Gate Settings for October 09, 2026 01:50 pm Gate 1 Gate 2 Gate 3 Gate 4 Gate 5 Gate 6 Gate 7 Gate 8
  0.40 0.35 0.35          
Date Time (EDT) Pool
(ft)
Storage
(%)
Storage
(ac-ft)
Goodwin
(ft)
Flow
(cfs)
Inflow
(cfs)
Precip
(in)
Air Temp
(F)
Oct-10 06:30 pm 659.97 0.0 0 636.98 142 73   59.0
Oct-10 05:30 pm 659.99 0.0 0 637.00 140 73   62.6
Oct-10 04:30 pm 660.02 0.0 0 637.03 140 73   61.9
Oct-10 03:30 pm 660.03 0.0 0 637.01 140 73   62.9
Oct-10 02:30 pm 660.06 0.0 0 636.95 140 73   68.5
Oct-10 01:30 pm 660.09 0.0 0 636.98 140 73   64.9
Oct-10 12:30 pm 660.11 0.0 0 636.95 140 73   62.3
Oct-10 11:30 am 660.14 0.0 0 637.02 140 73   60.2
Oct-10 10:30 am 660.16 0.0 0 636.93 140 73   54.9
Oct-10 09:30 am 660.19 0.0 0 636.96 140 73   49.5
Oct-10 08:30 am 660.21 0.0 0 637.06 140 72   45.4
Oct-10 07:30 am 660.24 0.0 0 636.98 140 73   43.1
Oct-10 06:30 am 660.26 0.0 0 636.94 140 73   43.3
Oct-10 05:30 am 660.28 0.0 0 636.98 140 73   43.6
Oct-10 04:30 am 660.31 0.0 0 636.93 140 73   43.7
Oct-10 03:30 am 660.33 0.0 0 636.99 140 73   44.6
Oct-10 02:30 am 660.36 0.0 0 636.88 140 73   45.6
Oct-10 01:30 am 660.38 0.0 0 636.99 140 73   46.8
Oct-10 12:30 am 660.40 0.0 0 636.91 142 73   48.3
Oct-09 11:30 pm 660.42 0.0 0 636.98 140 73   48.3
Oct-09 10:30 pm 660.45 0.0 0 637.00 140 73   50.8
Oct-09 09:30 pm 660.47 0.0 0 637.02 140 73   52.0
Oct-09 08:30 pm 660.49 0.0 0 636.99 140 73   54.6
Oct-09 07:30 pm 660.52 0.0 0 636.94 140 73   56.8
Oct-09 06:30 pm 660.53 0.0 0 637.01 142 73   61.6
Maximum 24 Hour Drawdown Rate Not Available - Missing Pool Data
Report Generated October 10, 2026 10:42 pm